On Saturday 24 December 2005 05:39 pm, Tony Duell wrote:
In my PX4 are 2 EPROMs. One is the standard utilities
ROM (PIP, STAT,
CONFIG, etc). The other seems to be the drivers for this RAMdisk. It is
in one of the carriers, but it's a hand-labelled ROM and looks to have
been crimped into the carrier by hand, not with one of the press tools.
Maybe a prototype or a low-volume product.
The roms in mine seem to be hand-labeled too, I think there are three
Are you talking about a PX4 or a PX8?
A PX8.
> There's a "wedge" on the machine,
which I think has its own
The wedge is normally extra RAM which appears as a
RAMdisk. On the PX8,
there was also a modem (300 buard), or a combined modem/RAMdisk unit. On
the PX4, I think the modem was a cartridge.
Yes, there's that modem, and I forget what else. I'd grab it and have a
look but don't recall just where it is at the moment.
battery
besides the main one and I think there's also one other one
inside there someplace, it's been a *long* time since i peeked in there.
I'd
The RAMdisk units do contain their own battery.
The machine itself contains 2 batteries. In the PX8, there's the main
battery pack (4 sub-C NiCds) and a separate 4.8V backup NiCd soldered to
the PCB.
I wonder if that's the one that's giving me trouble?
Considering I am not likely to use these machines
every day, I find
recharageable battereis to be a pain. They are going to self-discharge in
storage and need charging before I can use it, they are going to fail
long before they should due to neglect. I've been running the PX4 on
alkaline AA primary cells anf the PX8 off my bench supply. Yes, I have to
do a hard reser every time and reset the configuration, but...
I've been trying to avoid that, but may give it a shot.
--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, a critter that can
be killed but can't be tamed. --Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin